Testing a furnace thermocouple is essential for diagnosing ignition problems. In this guide, step-by-step instructions show how to use a multimeter to measure voltage and check continuity, confirming whether the thermocouple is functioning properly. It also covers common troubleshooting scenarios, such as pilot light issues or intermittent furnace shutdowns, and explains how to isolate the thermocouple as the cause. Safety tips for handling and testing the device are included. Following these steps helps you accurately identify defective thermocouples, maintain efficient heating performance, and avoid unnecessary service calls, ensuring your furnace operates reliably throughout the cold season.

When the summer heat hits, having a reliable air conditioning system is essential. At Duct Professor Heating & Cooling, we provide professional AC installation in Prospect Heights to ensure your home or business stays cool and comfortable all season long. Whether you're replacing an outdated unit or installing a new energy-efficient system, our experienced technicians will guide you through the process with honest advice and expert care.

In addition to installations, we specialize in fast and dependable HVAC repair in Prospect Heights. If your system is making strange noises, blowing warm air, or simply not working like it used to, our team can diagnose and fix the problem quickly—restoring your comfort without delay.

To keep your system running efficiently, we also offer seasonal AC tune-up in Prospect Heights. Routine maintenance helps prevent breakdowns, reduces energy costs, and extends the life of your unit.

As the temperatures drop, the idea of no heat is a chilling thought. A simple furnace malfunction is one thing—a furnace not igniting burners is another. To help you maintain a safe living space throughout the cold months, we have created an outline of the most common reasons a furnace may stop igniting and ways to respond to the issue.

Top Causes of Furnace Ignition Issues

There are a variety of reasons as to why a furnace can exhibit ignition issues. Considering furnaces contain a series of internal components and are connected to other home systems, ignition issues can stem from numerous directions.

Before we go in-depth into each cause, it is important to call an emergency plumber if you smell gas in your house.

Now, here are the top causes of furnace ignition issues:

Gas Line Issues

Defective Thermostat

Clogged Furnace Filter

Malfunctioning Igniter or Pilot Light

Dirty Gas Burners

Damaged Flame Sensor

Draft

Loose or Damaged Electrical Components

Tripped Circuit Breaker

High-Limit Switch Activation

Control Board Problems

Clogged Exhaust Vents

5-Star Furnace Repair and Replacement Services

If there are blinking lights on your furnace or it is not lighting, contact AccuTemp for furnace repair services in New Orleans and other surrounding areas. Our specialists provide 5-star heating services for local homeowners.

Nordyne was founded in 1919, and it is known as Nortek Global HVAC. Nortek Global HVAC is a subsidiary company of Nortek Holdings Incorporation. It is a top brand for manufacturing heating, cooling, and temperature-controlling equipment in the global HVAC market. Nordyne has over 100 years of experience. Nordyne AC parts are known to be reliable and high quality.

A hermetic reciprocating compressor is driven by a crankshaft and carries coolant at high pressure from the low side to the top side of a cooling system by using one or more pistons. Tecumseh introduced its first hermetically sealed reciprocating compressor in 1938, which was a revolution in the refrigeration industry.

Armstrong HVAC parts play a vital role in maintaining the efficiency and functionality of heating, ventilation, and air conditioning systems. These components are essential for both residential and commercial HVAC systems, as they ensure the proper circulation of air, temperature control, and overall system performance. On all of their heating and cooling devices.

Carrier is the most famous brand of home appliances designing, innovation, and manufacturing. It is the global leader in HVACR and Spot Coolers, Arcoaire, Bryant, Beretta, Carlyle, CIAT, Comfortmaker, Payne, Riello, SLD, Tempstar, Day & Night, Heil, Keeprite, Toshiba-Carrier, Totaline, NORESCO, Automated Logic, and EcoEnergy are sub-companies.

Sensus regulators used in various industries and applications to control and regulate the flow of gases or liquids. They are designed to ensure accurate and precise control of pressure, temperature, and flow rates in a wide range of processes. Sensus regulators are known for their reliability.